Chintakayala PK, Young CW. Using big data to understand consumer behaviour on ethical issues. JCE. 2017 Apr 10.
Johannes CB, Crawford SL, Longcope C, McKinley SM. Bleeding patterns and changes in the perimenopause: a longitudinal characterization of menstrual cycles. Clin Consultations Obstetr Gynecol. 1996;8:9-20.